Peel out the outer skin of the bananas and cut into small pieces.
Heat oil in a pan and fry the bananas till it gets golden brown in colour. Drain out the excess oil and let it cool. In same pan fry cashew nuts and raisins. Keep it aside.
In a bowl add 4 eggs, sugar, cardamom powder and whisk well.
Add fried banana, cashew nuts and raisins into it and mix well.
Heat 1 tsp oil in a pressure cooker at low flame, pour egg mixture and close the lid without placing pressure cooker weight. Cook for 15-20 minutes